What's happening RE Blender Player? Has it been discontinued?
Blender Player was a part of the Blender Game engine, which relies on Blender Internal Render engine. 

Blender Internal Render engine was dropped due to the fact that its render aproach was quite outdated and with the release of Eevee as the new physically based real-time render engine, the developers would have had to take care of three render engines (Blender Internal, Cycles and Eevee). 

Depending on what you want to do with Blender Player, there might be alternative solutions with UPBGE and Armory3D (no MacOS support, afaik)